In a world where humanity teeters on the brink of extinction after the sudden appearance of monstrous Fiends a century ago, magic has been militarized as the only effective weapon against the invasion. The nations of humanity, protected by a massive magical barrier erected by Babel, muster tens of thousands of Magicmasters to fight for survival. Among them, Alus Reigin stands at the pinnacle: the youngest ever Single-digit Magicmaster, ranked number one out of over 100,000, whose unparalleled combat record has reclaimed more lost territory than anyone alive.

Saikyō Mahōshi no Inton Keikaku Zero -Hajimari no Hishi-roku- is a prequel manga that unfolds the untold story of Alus Reigin before he enters the Second Magical Institute under false identity. This narrative traces the harsh trajectory of how a boy thrust into a secret military training facility rose to become the world’s most feared and respected Magicmaster. Set in the dark age of the magical nation of Alpha, the story reveals the relentless training, brutal Fiend subjugations, and the cold, rational decisions that forged Alus’s overwhelming power — as well as the loneliness and sacrifices that came with it. It delves into his earliest missions, the origins of his partnership with Loki Leevahl, and the events that shaped his desire for a quiet retirement, ultimately setting the stage for his later enrollment at the academy and his encounters with Tesfia Fable, Alice Tilake, and others. Through this prequel, the reader witnesses the making of a legend: the hidden records of the beginning.